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Title: Implementation of a dispatch-instruction protocol for cardiopulmonary resuscitation according to various abnormal breathing patterns: A population-based study
Authors: Fukushima, Hidetada
Imanishi, Masami
Iwami, Taku  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-4150-7065 (unconfirmed)
Kitaoka, Hironori
Asai, Hideki
Seki, Tadahiko
Kawai, Yasuyuki
Norimoto, Kazunobu
Urisono, Yasuyuki
Nishio, Kenji
Okuchi, Kazuo
Author's alias: 石見, 拓
Issue Date: 17-Sep-2015
Publisher: BioMed Central Ltd.
Journal title: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
Volume: 23
Thesis number: 64
Abstract: Background: We modified the dispatch protocol for cardiopulmonary resuscitation (CPR) using results of a retrospective analysis that identified descriptions by laypersons of possible patterns of agonal respiration. The purpose of this study was to assess the effectiveness of this modified protocol by comparing the frequency of dispatch instructions for CPR and bystander CPR before and after protocol implementation. We also identified descriptions of abnormal breathing patterns among 'Not in cardiac arrest (CA)' unresponsive cases. Methods: This study was conducted prospectively using the population-based registry of out-of-hospital cardiac arrests (OHCAs). For 8 months we implemented this modified protocol in cooperation with 4 fire departments that cover regions with a total population of 840, 000. Results: There were 478 and 427 OHCAs before and after implementation, respectively. Among them, 69 and 71 layperson-witnessed OHCAs for pre- and post-implementation, respectively, were analyzed. Dispatchers provided CPR instructions more frequently after protocol implementation than before (55/71 [77.5 %] vs. 41/69 [59.4 %], p < 0.05). Based on breathing patterns described by emergency callers, dispatchers assessed 143 'Not in CA' unresponsive cases and provided CPR instruction for 45 cases. Sensitivity and specificity of this protocol was 93 % and 50 %, respectively. Conclusions: This modified protocol based on abnormal breathing described by laypersons significantly increased CPR instructions. Considering high sensitivity and low specificity for abnormal breathing to identify CA and the low risk of chest compression for 'Not in CA' cases, our study suggested that dispatchers can provide CPR instruction assertively and safely for those unresponsive individuals with various abnormal breathing patterns.
Rights: © 2015 Fukushima et al. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
URI: http://hdl.handle.net/2433/212495
DOI(Published Version): 10.1186/s13049-015-0145-8
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